Comparison of phenotypic correlations among S1 lines, and their testcrosses, from four Iowa Stiff Stalk populations of maize

dc.contributor.author Walters, S. P.
dc.contributor.author Russell, W. A.
dc.contributor.author Lamkey, Kendall
dc.contributor.author Lamkey, K. R.
dc.contributor.department Agronomy
dc.date 2018-02-18T23:23:48.000
dc.date.accessioned 2020-06-29T23:03:26Z
dc.date.available 2020-06-29T23:03:26Z
dc.date.issued 1991
dc.description.abstract <p>Relationships between agronomic traits of maize (Zea mays L.) parental lines and traiits of hybrid progenies are important for breeders. If significant improvements in source populations are made by such procedures as recurrent selection, a breeder should know how such changes affect relationships between traits of parental lines and hybrid progenies. Correlations between agronomic traits and grain yield among random S1 lines and S1 line testcrosses from the original Iowa Stiff Stalk Synthetic (BSSSC0) maize (Zea mays L.) population, two improved strains of BSSS [BS13(S)C3 and BSSS(R )C9], and the intermated cross between the two improved populations [BS13(S)C3 x BSSS(R)C9], were calculated to determine changes that occurred with recurrent selection in BSSS. Previous evaluations of these populations showed significant changes for agronomic traits and for genetic variances among S1 lines and hybrid progenies. Both S1 lines and S1-line testcrosses showed significant correlations between agronomic traits and grain yield in etch population. No consistent trend in phenotypic correlations between the unimproved and improved populations were observed. Phenotypic correlations between S1-line traits and testcross yield were too small to he of predictive value in a selection program.</p>
dc.description.comments <p>This article is published as Walters, S. P., W. A. Russell, and K. R. Lamkey. 1991. Comparisons of phenotypic correlations among S1 lines, and their testcrosses, from four Iowa Stiff Stalk populations of maize. Maydica 36:39-44.</p>
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dc.identifier archive/lib.dr.iastate.edu/agron_pubs/212/
dc.identifier.articleid 1215
dc.identifier.contextkey 10810349
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath agron_pubs/212
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/4547
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/agron_pubs/212/1990_Lamkey_ComparisonsofPhenotypic001.PDF|||Fri Jan 14 22:35:34 UTC 2022
dc.subject.disciplines Agricultural Science
dc.subject.disciplines Agronomy and Crop Sciences
dc.subject.disciplines Plant Breeding and Genetics
dc.subject.keywords Corn
dc.subject.keywords Recurrent selection
dc.subject.keywords Maize synthetics
dc.title Comparison of phenotypic correlations among S1 lines, and their testcrosses, from four Iowa Stiff Stalk populations of maize
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication fadecd27-89f7-4164-8981-ce39d1a066e1
relation.isOrgUnitOfPublication fdd5c06c-bdbe-469c-a38e-51e664fece7a
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